CN100413604C - Method for feeding fly ash in electric power plant - Google Patents
Method for feeding fly ash in electric power plant Download PDFInfo
- Publication number
- CN100413604C CN100413604C CNB2005100128716A CN200510012871A CN100413604C CN 100413604 C CN100413604 C CN 100413604C CN B2005100128716 A CNB2005100128716 A CN B2005100128716A CN 200510012871 A CN200510012871 A CN 200510012871A CN 100413604 C CN100413604 C CN 100413604C
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- China
- Prior art keywords
- coal dust
- ash
- powder coal
- power plant
- electric power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The present invention belongs to the technical field of material conveyance, and more specifically discloses a method for conveying powder coal dust in an electric power plant. The method comprises: powder coal dust is discharged by a dust hopper of an electric dust remover and enters a winnowing system through an air distributing channel which is communicated with an air inlet and an air outlet of a blower, the winnowing system is formed by that at least two sets of coarse powder coal dust winnowing machine and a fine powder coal dust winnowing machine are successively connected in series. The coarse powder coal dust and the fine powder coal dust are separated; dust outlets of the winnowing machines which are connected in series are connected with dust conveying pumps; the dust conveying pumps convey the separated coarse powder coal dust and the fine powder coal dust to an arranged coarse powder coal dust bin and an arranged fine powder coal dust bin through a conveying pipeline. The method has the advantages of compact equipment arrangement, simple structure, small occupation area and little maintenance workload for equipment when used for conveying the powder coal dust in an electric power plant; besides, the safe operation reliability of the whole conveying system can be effectively guaranteed; the environmental pollution of the plant area, which is caused by the leakage of the powder coal dust, can be effectively avoided.
Description
Technical field
The invention belongs to the mass transport technical field, relate in particular to the carrying method of the flyash in the power generation process of thermal power plant.
Background technology
At present, coal-fired station all adopts to utilize after electric cleaner is got rid of to the conveying of the flyash of generation and does except that dry-extraction method, promptly connect the defeated grey storehouse of dozens of pump in the lower end of each electric cleaner, directly with ash transfer in grey storehouse, and then utilize independently screening installation, the flyash in this ash storehouse is pressed the magnitude classification of soot particle and handled.In the course of conveying of this flyash, because what adopt is the method for carrying the back sorting earlier, must connect in the lower end of each electric cleaner tens defeated grey storehouse pumps (such as, must 12-16 defeated grey storehouse of configuration pump in the cleaner of one 300,000 kilowatts generating set).Therefore to exist equipment many and the occupied ground area is big for the carrying method of this flyash, and maintenance is big and easily cause the defective of plant environment pollution because of the pump leakage of defeated grey storehouse.
The content of invention
Purpose of the present invention just provides the carrying method of a kind of equipment relative compact, simple in structure and safe fly ash in electric power plant.
Realize that the technical scheme that above-mentioned purpose of the present invention adopted is:
The carrying method of fly ash in electric power plant, may further comprise the steps: flyash is discharged by the ash bucket of electric cleaner, through entering in the meal coal ash winnowing machine that successively is connected in series by at least two covers, the aidr bells blast system that the fine powdered coal winnowing machine constitutes with the air distribution pipeline that is communicated with into and out of the air port of blower fan, described flyash is carried out thickness to be separated, ash hole at the winnowing machine of described serial connection is connected with defeated grey storehouse pump, and this defeated grey storehouse pump is delivered to meal coal ash, the fine powdered coal that is separated in set cinder storehouse and the thin grey storehouse through conveyance conduit.
Its additional technical feature comprises:
Between the ash hole of described winnowing machine and defeated grey storehouse pump, be connected with transition ash storehouse;
Outlet place at described electric duster ash bucket is connected with the dry ash transfer valve;
Cross-under has weary air separation between the air inlet of described fine powdered coal winnowing machine and described blower fan;
Advancing of described weary air separation is connected with the bypass duct of being with controlling organization between minute mouth and air outlet;
Described fan outlet place is connected with balanced valve.
The carrying method of fly ash in electric power plant provided by the present invention compared with prior art, have the following advantages: because the flyash flyash of discharging from the ash bucket of electric cleaner directly enters the aidr bells blast system through the air distribution pipeline, flyash is carried out the thickness separation to be delivered in set cinder storehouse and the thin grey storehouse again, the elder generation that promptly realizes flyash separates conveying again, this system only needs the defeated grey storehouse of configuration one cover pump in thick, thin aidr bells blast system, needs 2-3 to get final product altogether.Therefore, the required equipment of this carrying method has the advantage that layout is compact, floor space simple in structure is little; Use this method have the maintenance of equipment little, can effectively guarantee the safe operation reliability of whole induction system and effectively avoid flyash to reveal the advantage of the environmental pollution that causes plant area.
Description of drawings
Fig. 1 is the schematic flow sheet of the carrying method of fly ash in electric power plant.
The specific embodiment
Below in conjunction with accompanying drawing the carrying method that the fly ash in electric power plant that is provided is provided is described in further detail:
As shown be the schematic flow sheet of coal-burning power plant's ash transfer method, promptly flyash is fed directly in the ash pipeline 9 of separation system through the ash bucket transfer valve 5,6,7,8 of four electric cleaners 1,2,3,4.Wherein thick, the fine powdered coal winnowing machine 13,14 of the two cover serial connections that are communicated with by this ash pipeline 9, with it of aidr bells blast system and blower fan 10 constitute.At blower fan under the effect of ash pipeline 9 air distributions, flyash fully mixes formation dilute phase gas-solid phase body with ducted moving air, dilute phase gas-solid phase body in the ash pipeline 9 at first is transported under the effect of aidr bells blast system power in the first flyash winnowing machine 13 (also being meal coal ash winnowing machine), the meal coal ash that particle diameter is bigger is selected, and collects and is delivered directly in the set cinder storehouse 17 by the first defeated grey storehouse pump 16 through cyclone collector; The less fine powdered coal of particle diameter then enters into the second flyash winnowing machine 14 (also being the fine powdered coal winnowing machine) with the wind, and the less fine powdered coal of particle diameter is selected and is delivered directly in the set thin grey storehouse 19 by the second defeated grey storehouse pump 18 through the cyclone collector collection; Thereby realize the separation of thickness flyash.
For the ducted flyash of air distribution thoroughly can being told, between the air outlet of the second flyash winnowing machine 14 and blower fan, be connected in series a cloth bag gatherer as weary air separation 15.So just, can be effectively the flyash of small particle diameter be more thoroughly told.This cloth bag gatherer and the second flyash winnowing machine are incorporated in the cyclone collector and are got final product, and also can use a cyclone collector separately.For the convenience of overhauling and using, between the air inlet of this weary air separation and air outlet, be connected with the bypass duct 20 of band valve.
Ash hole and 16,18 of defeated grey storehouse pumps at winnowing machine 13,14 are connected with transition ash storehouse 11,12.When defeated grey storehouse pump of maintenance and upstream device, from winnowing machine, flow out flyash and can keep in wherein, avoid shutting down influence and produce because of maintenance.The purpose that is connected with balanced valve 21 at the fan outlet place is to be in negative pressure state in the pipeline in order to adjust the size of air distribution pipeline apoplexy amount, to make, so that formed dilute phase gas-solid phase body is in optimum state in the air channel.
Claims (6)
1. the carrying method of fly ash in electric power plant, it is characterized in that may further comprise the steps: flyash is discharged by the ash bucket of electric cleaner, through entering in the meal coal ash winnowing machine that successively is connected in series by at least two covers, the aidr bells blast system that the fine powdered coal winnowing machine constitutes with the air distribution pipeline that is communicated with into and out of the air port of blower fan, described flyash is carried out thickness to be separated, ash hole at the winnowing machine of described serial connection is connected with defeated grey storehouse pump, and this defeated grey storehouse pump is delivered to meal coal ash, the fine powdered coal that is separated in set cinder storehouse and the thin grey storehouse through conveyance conduit.
2. the carrying method of fly ash in electric power plant according to claim 1 is characterized in that: be connected with transition ash storehouse between the ash hole of described winnowing machine and defeated grey storehouse pump.
3. the carrying method of fly ash in electric power plant according to claim 1, it is characterized in that: the outlet place at described electric duster ash bucket is connected with the dry ash transfer valve.
4. the carrying method of fly ash in electric power plant according to claim 1, it is characterized in that: cross-under has weary air separation between the air inlet of described fine powdered coal winnowing machine and described blower fan.
5. the carrying method of fly ash in electric power plant according to claim 4 is characterized in that: described weary air separation advance the bypass duct that is connected with the band controlling organization between minute mouth and air outlet.
6. the carrying method of fly ash in electric power plant according to claim 1, it is characterized in that: described fan outlet place is connected with balanced valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100128716A CN100413604C (en) | 2005-09-29 | 2005-09-29 | Method for feeding fly ash in electric power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100128716A CN100413604C (en) | 2005-09-29 | 2005-09-29 | Method for feeding fly ash in electric power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1759938A CN1759938A (en) | 2006-04-19 |
| CN100413604C true CN100413604C (en) | 2008-08-27 |
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ID=36706228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100128716A Expired - Fee Related CN100413604C (en) | 2005-09-29 | 2005-09-29 | Method for feeding fly ash in electric power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN100413604C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029218B (en) * | 2012-12-25 | 2016-01-20 | 湖南银源投资股份有限公司 | A kind of powder ash carrying method of powder ash field and system and device |
| CN112024094B (en) * | 2020-08-17 | 2022-03-29 | 陕西正元麟电环保产业有限公司 | Superfine fly ash production system and production process |
| CN113996142A (en) * | 2021-09-08 | 2022-02-01 | 中国大唐集团科学技术研究总院有限公司华东电力试验研究院 | System and method for manufacturing zeolite and capturing carbon dioxide in flue gas by using fly ash |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551214A (en) * | 1983-07-01 | 1985-11-05 | Hoffmann-La Roche Inc. | Photochemical preparation of previtamin D |
| JPH06126252A (en) * | 1992-10-16 | 1994-05-10 | Ube Ind Ltd | Method for improving quality of fly ash |
| CN1310059A (en) * | 2001-02-03 | 2001-08-29 | 张永明 | Nanometer superfine powder and hollow bead separation and classifying device |
| CN1141188C (en) * | 2000-10-30 | 2004-03-10 | 华电环保系统工程有限公司 | Quickly loaded separating system of powdered coal ash |
| CN1583293A (en) * | 2003-08-18 | 2005-02-23 | 郑州大学 | Separating and extracting apparatus high-additional value mineral from dry flyash |
-
2005
- 2005-09-29 CN CNB2005100128716A patent/CN100413604C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551214A (en) * | 1983-07-01 | 1985-11-05 | Hoffmann-La Roche Inc. | Photochemical preparation of previtamin D |
| JPH06126252A (en) * | 1992-10-16 | 1994-05-10 | Ube Ind Ltd | Method for improving quality of fly ash |
| CN1141188C (en) * | 2000-10-30 | 2004-03-10 | 华电环保系统工程有限公司 | Quickly loaded separating system of powdered coal ash |
| CN1310059A (en) * | 2001-02-03 | 2001-08-29 | 张永明 | Nanometer superfine powder and hollow bead separation and classifying device |
| CN1583293A (en) * | 2003-08-18 | 2005-02-23 | 郑州大学 | Separating and extracting apparatus high-additional value mineral from dry flyash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1759938A (en) | 2006-04-19 |
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Granted publication date: 20080827 Termination date: 20130929 |